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In certain scenarios it can be interesting or necessary to apply SNAT only to certain client IPs when accesing a virtual server to f.e. avoid assymetric routes, when the server gateway is not the F5… (take a look at this link for more examples).

NAT (Network Address Translation) can be configured in our Checkpoint FW in 2 two different ways: Manual or Automatic

Automatic NAT

To configure the automatic NAT, the SERVER object properties has a NAT section.
So for example, if we want our host with internal private IP 10.10.50.50 to be published in Internet with public IP 80.80.100.100: